<template>
    <div class="xingLogin">
      <div class="container">
        <h1>Welcome</h1>
        <form class="form">
          <input type="text" placeholder="用户名">
          <input type="password" placeholder="密码">
          <button type="submit" @click="handleSubmit" id="login-button">登录</button>
        </form>
      </div>

      <ul class="bg-bubbles">
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
      </ul>
    </div>
</template>

<script>
export default {
  name: 'xingLogin',
  methods: {
    handleSubmit () {
      this.$router.push('/index')
    }
  }
}
</script>

<style lang="scss" scoped>
  body ::-webkit-input-placeholder {
    /* WebKit browsers */
    font-family: 'Source Sans Pro', sans-serif;
    color: white;
    font-weight: 300;
  }
  body :-moz-placeholder {
    /* Mozilla Firefox 4 to 18 */
    font-family: 'Source Sans Pro', sans-serif;
    color: white;
    opacity: 1;
    font-weight: 300;
  }
  body ::-moz-placeholder {
    /* Mozilla Firefox 19+ */
    font-family: 'Source Sans Pro', sans-serif;
    color: white;
    opacity: 1;
    font-weight: 300;
  }
  body :-ms-input-placeholder {
    /* Internet Explorer 10+ */
    font-family: 'Source Sans Pro', sans-serif;
    color: white;
    font-weight: 300;
  }
  .xingLogin {
    background: #50a3a2;
    background: -webkit-linear-gradient(top left, #50a3a2 0%, #53e3a6 100%);
    background: linear-gradient(to bottom right, #50a3a2 0%, #53e3a6 100%);
    opacity: 0.8;
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 400px;
    margin-top: -200px;
    overflow: hidden;

  }

  .xingLogin.form-success .container h1 {
    -webkit-transform: translateY(85px);
    -ms-transform: translateY(85px);
    transform: translateY(85px);
  }
  .container {
    max-width: 600px;
    margin: 0 auto;
    padding: 80px 0;
    height: 400px;
    text-align: center;
  }
  .container h1 {
    font-size: 40px;
    -webkit-transition-duration: 1s;
    transition-duration: 1s;
    -webkit-transition-timing-function: ease-in-put;
    transition-timing-function: ease-in-put;
    font-weight: 200;
  }
  form {
    padding: 20px 0;
    position: relative;
    z-index: 2;
  }
  form input {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    outline: 0;
    border: 1px solid rgba(255, 255, 255, 0.4);
    background-color: rgba(255, 255, 255, 0.2);
    width: 250px;
    border-radius: 3px;
    padding: 10px 15px;
    margin: 0 auto 10px auto;
    display: block;
    text-align: center;
    font-size: 18px;
    color: white;
    -webkit-transition-duration: 0.25s;
    transition-duration: 0.25s;
    font-weight: 300;
  }
  form input:hover {
    background-color: rgba(255, 255, 255, 0.4);
  }
  form input:focus {
    background-color: white;
    width: 300px;
    color: #53e3a6;
  }
  form button {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    outline: 0;
    background-color: white;
    border: 0;
    padding: 10px 15px;
    color: #53e3a6;
    border-radius: 3px;
    width: 280px;
    cursor: pointer;
    font-size: 18px;
    -webkit-transition-duration: 0.25s;
    transition-duration: 0.25s;
  }
  form button:hover {
    background-color: #f5f7f9;
  }
  .bg-bubbles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
  }
  .bg-bubbles li {
    position: absolute;
    list-style: none;
    display: block;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.15);
    bottom: -160px;
    -webkit-animation: square 25s infinite;
    animation: square 25s infinite;
    -webkit-transition-timing-function: linear;
    transition-timing-function: linear;
  }
  .bg-bubbles li:nth-child(1) {
    left: 10%;
  }
  .bg-bubbles li:nth-child(2) {
    left: 20%;
    width: 80px;
    height: 80px;
    -webkit-animation-delay: 2s;
    animation-delay: 2s;
    -webkit-animation-duration: 17s;
    animation-duration: 17s;
  }
  .bg-bubbles li:nth-child(3) {
    left: 25%;
    -webkit-animation-delay: 4s;
    animation-delay: 4s;
  }
  .bg-bubbles li:nth-child(4) {
    left: 40%;
    width: 60px;
    height: 60px;
    -webkit-animation-duration: 22s;
    animation-duration: 22s;
    background-color: rgba(255, 255, 255, 0.25);
  }
  .bg-bubbles li:nth-child(5) {
    left: 70%;
  }
  .bg-bubbles li:nth-child(6) {
    left: 80%;
    width: 120px;
    height: 120px;
    -webkit-animation-delay: 3s;
    animation-delay: 3s;
    background-color: rgba(255, 255, 255, 0.2);
  }
  .bg-bubbles li:nth-child(7) {
    left: 32%;
    width: 160px;
    height: 160px;
    -webkit-animation-delay: 7s;
    animation-delay: 7s;
  }
  .bg-bubbles li:nth-child(8) {
    left: 55%;
    width: 20px;
    height: 20px;
    -webkit-animation-delay: 15s;
    animation-delay: 15s;
    -webkit-animation-duration: 40s;
    animation-duration: 40s;
  }
  .bg-bubbles li:nth-child(9) {
    left: 25%;
    width: 10px;
    height: 10px;
    -webkit-animation-delay: 2s;
    animation-delay: 2s;
    -webkit-animation-duration: 40s;
    animation-duration: 40s;
    background-color: rgba(255, 255, 255, 0.3);
  }
  .bg-bubbles li:nth-child(10) {
    left: 90%;
    width: 160px;
    height: 160px;
    -webkit-animation-delay: 11s;
    animation-delay: 11s;
  }
  @-webkit-keyframes square {
    0% {
      -webkit-transform: translateY(0);
      transform: translateY(0);
    }
    100% {
      -webkit-transform: translateY(-700px) rotate(600deg);
      transform: translateY(-700px) rotate(600deg);
    }
  }
  @keyframes square {
    0% {
      -webkit-transform: translateY(0);
      transform: translateY(0);
    }
    100% {
      -webkit-transform: translateY(-700px) rotate(600deg);
      transform: translateY(-700px) rotate(600deg);
    }
  }
</style>
